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KB#00118-Not VCPI or DPMI compatible

Title:

Not VCPI or DPMI compatible

Description:

This is currently reported only on the SU386 BBx. It is caused by very old memory managers that are not supporting the current VCPI or DPMI standard.

Resolution:

Upgrade the QEMM version or use EMM386 memory manager. QEMM 6.02 was known to be bad. QEMM 7.04 known to be good. This problem was "worked around" for PROGRESSION/4 rev 2.01 but occasionally crops up in more current revisions (such as rev 2.2) because it is really caused by non-standard memory managers and not BBx. Sometimes it is a configuration problem with QEMM so the user may want to consult the QEMM manual for configuration information and explanations regarding VCPI and DPMI for their version of QEMM.

UPDATE: Found to happen with QEMM 7.5 when expanded memory is disabled (EMM:N). Turning on expanded memory, even without spedifying a page frame, will correct the problem.